#12665: Make Read instances for Integral types faster, and make them fail fast -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: dfeuer Type: feature request | Status: new Priority: high | Milestone: 8.2.1 Component: Core Libraries | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by int-e): It's bad enough for integral types: {{{
reads "\t\n\v\f\r \160\5760\6158\8192\8193\8194\8195\8196\8197\8198\8199\8200\8201\8202\8239\8287\12288 ( ( - 1 ) ) " :: [(Integer,String)] [(-1," ")] }}}
(Interestingly, `read "-(1)"` fails) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12665#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler